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Water Supply Outlook for Colorado and New Mexico - Page 4 SOUTH PLATTE RIVERkWATERSHEOIN COLORADO SUMMARY of SNOW MEASUREMENTS �.. ®., �__�.-. G . S .�Ir ® p to ly p� (COMPARISON WITH PREVIOUS YEARS) Allot_- I _�_ �_ -rRJI _--_ s p®i • RIVER NCou sesl T E1 YE AP S SNOB - �al HATER AS DERCENT OF f SU6WATERSHE or D Averaged Last rear %I-EO Ave,age 1 g I C KI IMADNAN N ' c - L , E Big Thompson 7 133 122 •G a , p l v. u a s . Boulder 5 142 130 d A C K s o a i Cache La Poudre 8 94 123 CAr[aoN a Clear Creek 5 122 123 no Saint Vrain 3 163 140 DEt�E• °'r` % ' U M A I South Platte 6 158 135 e .N [ P/ . r. Cc t t •p 1 N rg n 0 U L D 0 G R Auer[lesn� _ 1,AxE u LPI isMLS arunow ' •• A D A a Y . SHOW [OURSE MIEASUR84BITS 10 0 IO 20-sui30 CURRENT INFORMATION PAST RECORD A R E F R A 0 E - - - WATER CONTENT S U M M I T E E R S N �� SNOW COURSE OAIs I T ylorr HATER (INCHES) SURVEY DEPTH CONTENT nnEnssw (INCHES) (INCHES) EAR 61 60 NDou Now LEGEND a D E E R T COLORADQ • For•cost ►ohM °•e�� c • snowCa,�s. SO= PIATTE BASIN E F rr ID SNOTEL Site s r Pigment ofLO -8oECASTS Av~ Boulder Creek • L Over 130% ra0trr ease r`° I' E,L PAS 0 �',lti1 �'Q 3129 40 9.6 9.5 7.0 ` ` EL LERI� ® 110-130% 'Boulder Falls 3/27 63 15.4 9.8 13.1 70- 90%0-1t0% Lake Eldora 3/30 58 16.5 11.4 11.6 •� Niwot 3/26 60 18.9 12:7 13.4 ® under 70% University CaW 3/27 73 21.6 14.4 17.8 Big 1hanpson River YOUR WATER SUPPLY Bear Lake 3/31 65 23.3 15.5 17.5 SNOWPACK ACCUMULATION WAS NEAR NORMAL DURING MARCH, WITH ONLY A SLIGHT Deer Ridge 3/30 33 8.0 4.1 5.0 Hidden Valley 3/30 43 10.4 9.3 10.1 DROP IN THE PERCENT OF NORMAL FIGURES IN MANY OF THE SMALLER SUBBASINS. SNOWPACK Lake Irene (B) 3/29 75 27.2 21.6 21.2 : Longs Peak 3/28 51 14.9 10.5 11.0 STATISTICS IN THE SOUTH PLATTE BASIN REMAIN HIGH, RANGING 22% TO 40% ABOVE 7Wo Mile 3/30 55 14.6 11.3 14.7 Willow Park 3/29 66 21.1 19.3 20.5 AVERAGE. THE HIGHEST SNOWPACK FIGURES ARE ON THE ST. VRAIN AT 63% ABOVE LAST Cache Ia Poudre YEARS READINGS AN INCREASE OF NEARLY 10% OF AVERAGE. MOST OF THE STREAMFLOW Bennett Creek 3/29 40 11.0 9.7 7.2 Big South 3/29 17 4.8 7.9 1.8 FORECASTS REMAIN NEAR THE MARCH FIRST LEVEL, 20% TO 30% ABOVE AVERAGE. WITH Cameron Pass 3/29 83 30.5 32.0 28.8 RESERVOIR STORAGE AT 6% ABOVE AVERAGE, WATER SUPPLIES ARE EXPECTED TO BE Chambers Lake 3/29 30 8.3 12.0 9.6 Deadman Hill 3/29 56 18.5 18.5 16.2 Hourglass Lake 3/29 37 10.6 11.1 7.2 EXCELLENT THIS SUMMER. Joe Wright 3/29 83 28.3 30.8 25.0 Lost Lake DISCC NTINUE - - Pine Creek 3 29 16 4.0 5.2 2.1 STREAMFLOW FORECASTS 0000 Ae. Ft.) April -September Red Feather DISC TINUE - - Forecast "io of Average _ Clear,.Creek FORECAST POINT Average 28.7 BaltimDre (B) 3/29 40 9.6 9.5 7.0 Bear Creek at Morrison 37 129 Berthoud Falls 3/29 60 17.9 13.8 13.4 Big Thompson River at Drake (1) 160 125 146.7 EM� 3/29 44 10.4 7.4 7.9 Boulder Creek at Orodell 60 128 68.0 Grizzly Peak (B) 3/28 66 21.7 17.2 18.6 268.0 Cache La Poudre River at Canyon Mouth (2) 345 129 Loveland pgsg 3/28 54 18.0 15.5 16.1 Clear Creek at Golden (3) 160 126 127.0 St. Vrain Creek at Lyons 95 121 78.8 St. Vrain River South Boulder Creek near Eldorado Springs 54 128 42.1 3/30 26 5.7 5.1 4.6 South Platte River at South Platte 236 120 197.0 COPelaad Lake Ward3/29 44 11.4 5.9 6.3 Wild Basin 3/30 48 12.5 8.1 11.3 (11 slAsrrrrd (In.plus by-pass Or pour' Plants. III Obsrn rd fl..a arms trans-bastn d-erslons plus municipal and irrigation diversions. (1)Observed flow mews ni diversion IN Positions saaea, Noe city all wa aY Chorea Pit-*laMMUaa• South Platte Myer Bison Reservoir 3/28 20 5.0 4. - WATER SUPPLY OUTLOOK Expressed as-Poor. Farr.Average.Ex- RESERVOIR STORAGE (Thousand Ae. Ft.) END DF MONTH Como �,,.y 3/29 34 8.7 6• 6.6 cellenI.With Respect to Usual Supply .- Geneva, Park 3/30 28 5.8 3. 3.8 Flo-Per,od Basin or Stream Usable Usable Storage �Iv��e Mountain 3/29 48 13.0 7. 10.1 and 0r Capacity Thrs last 1981-l0 STREAM or AREA Seasat SeasoLot.n RESERVOIR Year rear Avers e Hoosier Pass 3/30 62 17.8 10. 12.6 Antero 16 16 16 14 Jefferson Creek 3/28 39 12.0 9. 9.1 23 27 25 Mosquito 3/27 41 11.5 7• 9.3 Coal Creek xcellen Average Barr Lake Sundance 3/30 51 12.8 8. - ,.• North Fork of South xcellen Black Hollow 8 4 5 4 Trout Creek Pass 3/27 32 7.6 3. 4.5 Excelle t Platte Boyd Lake 48 40 38 36 North Fork of Cache Average Average Cache La Poudre 10 9 10 8 La Poudre Carter Lake 11�+ 103 101 98 Ralston Creek Average Average Chambers Lake 9 3 5 4 Rock Creek Excellen Averag Cheesman 79 74 79 51 South Platte from xcellen Averag Cobb Lake 34 20 20 ' 14 Greeley to Fort Eleven Mile 98 98 78 89 Empire 38 15 31 32 Morgan South Platte from Excellen Averag Fossil Creek 12 0 7 8 Gross 43 29 2 2 NS-No survey. Fort Morgan to 6 5 (g)-on od facent drainage. Sterling Halligan 6 5 Average Averag Horsetooth 144 133 113 108 *Less than 15 years of record. Sterling Jackson 35 31 34 34 D Snow course discontinued. Estimates available thru South Platte below Julesburg 28 21 24 23 SCS office. Lake Loveland 14 10 10 10 WATERSHED SNOWPACK Lone Tree 9 6 8 6 Mariano 6 4 5 5 Based on 5 Selected Snow Courses . `- Marshall 10 9 9 5 z 15 W 3 18 15 16 Marston J 15 a » .. ..:.M.::;Q 1 8 1 8 0 n t 24 > Mil Point of Rocks 70 68 68 67 5 3 ::;:«;::::;:.; :;: >::<:.:.. ,:....:::..:... P wi 33 5 8 23 2 2 O Qf re tt W 8 57 58 45 5 Riverside die 42 37 37 25 W Stan Y 5OW s 8 6 .. Teri a Y 20 Union _ - - 13 13. 13 10 3 e --- P To9, Windsor 19 15 13 12 3 Horsecreek 16 12 O 15 z r� r ' 10 €s � O 111 N 5 yJ � lkttl�#M'�11� fly RECCIRD z 0 FEB. Ist MAR. Ist APR. Ist MAY. Ist *Berthoud Pass, Cameron Pass, Deadman Hill, Hoosier Pass, University Camp. . LIMAlD11'Dar1AND.40 111111 . r'